CN109060852A - A kind of osmosis device and the real time scan device for cooperating Medical CT - Google Patents

A kind of osmosis device and the real time scan device for cooperating Medical CT Download PDF

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Publication number
CN109060852A
CN109060852A CN201810975801.8A CN201810975801A CN109060852A CN 109060852 A CN109060852 A CN 109060852A CN 201810975801 A CN201810975801 A CN 201810975801A CN 109060852 A CN109060852 A CN 109060852A
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gland
pillar
osmosis device
pressure head
osmosis
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CN201810975801.8A
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Chinese (zh)
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CN109060852B (en
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陈世杰
马巍
李国玉
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Northwest Institute of Eco Environment and Resources of CAS
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Cold and Arid Regions Environmental and Engineering Research Institute of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082Investigating permeability by forcing a fluid through a sample
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/10Different kinds of radiation or particles
    • G01N2223/101Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016X-ray
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/60Specific applications or type of materials
    • G01N2223/616Specific applications or type of materials earth materials

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pulmonology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

The present invention relates to a kind of osmosis device and the real time scan devices of cooperation Medical CT, belong to material field of non destructive testing.Osmosis device includes nitrogen cylinder, air gauge, pressure reducing valve and osmosis device noumenon.Osmosis device noumenon includes the first gland, the second gland, pillar, piston, First Transition connector and the second transit joint.Pillar is the intermediate pillar construction with space chamber, pillar one end is connected with the first gland, the other end and second gland connection, piston of the pillar far from the first gland are set to the intracavitary portion in space and space chamber are divided into the first space chamber and second space chamber, and piston can be moved to any position of space chamber.Osmosis device noumenon material is aluminium.The osmosis apparatus structure is simple, and design is rationally, practical.Material using aluminium as osmosis device noumenon will not generate large effect when being able to satisfy Medical CT imaging.

Description

A kind of osmosis device and the real time scan device for cooperating Medical CT
Technical field
The present invention relates to material field of non destructive testing, in particular to a kind of osmosis device and cooperation Medical CT Real time scan device.
Background technique
Permeable pressure can change the internal stress state of Rock And Soil, and the change of stress state can react on Rock And Soil Lead to the change of Penetration Signature.In order to make clear of influence of the water pressure to inside soil body structure, many scholars use CT scan skill Art studies influence of the osmotic pressure to inside soil body structure, it is intended to study Rock And Soil under saturating effect of water pressure by observation method Microfissure extension and the microscopical structures Evolution such as closure, while to the permeable sandstone rule development system of Rock And Soil, depth It studies with entering.
But the conventional pressurization of discovery is seeped when carrying out carrying out CT continuous scanning in the prior art while osmotic pressure load The material of saturating equipment is usually to be made of irony or steel material, and this material can not be well by the X-ray of Medical CT It is penetrated, is not considered the influence of CT scan in structure design generally also, this, which allows for conventional osmosis device, to expire The experimental condition of sufficient CT scan.
Summary of the invention
The purpose of the present invention is to provide a kind of osmosis devices, improve the deficiencies in the prior art, structure can be effective The influence for avoiding CT scan, convenient for studied using CT scan technology Rock And Soil under saturating effect of water pressure microfissure extension With closure etc. microscopical structures Evolution.
Another object of the present invention is to provide a kind of real time scan devices for cooperating Medical CT, have the osmosis The repertoire of device.
The embodiment of the present invention is achieved in that
A kind of osmosis device comprising
Nitrogen cylinder, air gauge, pressure reducing valve and osmosis device noumenon,
The nitrogen cylinder is connected with the air gauge, and the air gauge is connected with the pressure reducing valve, the pressure reducing valve and institute State the connection of osmosis device noumenon;
The osmosis device noumenon includes the first gland, the second gland, pillar, piston, First Transition connector and the Two transit joints;
The pillar is the intermediate pillar construction with space chamber, and described pillar one end is connected with the first gland, the branch The other end of the column far from first gland is connected with second gland, and the piston is set to the intracavitary portion in the space and will The space chamber is divided into the first space chamber and second space chamber, and the piston can be moved to any position of the space chamber;
The First Transition connector is connected with first gland, and second transit joint and second gland connect It connects;
The osmosis device noumenon material is aluminium.
Specifically, the osmosis apparatus structure is simple, design is rationally, practical.It is filled using aluminium as osmosis The material for setting ontology, be well positioned to meet Medical CT it is carried out real time scan can't to its CT scan be imaged generate it is biggish It influences, the material that can also be easy to be penetrated by X-ray using other in other embodiments, such as carbon fiber.
Optionally, the osmosis device noumenon further includes the first sealing ring, and first sealing ring is arranged for First gland and the pillar are sealed.
Optionally, the osmosis device noumenon further includes the second sealing ring, and second sealing ring is arranged for Second gland and the pillar are sealed.
Specifically, sealing ring is arranged between the first gland and pillar, between the second gland and pillar can fill infiltration It sets ontology and plays good sealing effect.Meanwhile sealing ring can also be used here, it can also achieve the effect that sealing.
Optionally, first sealing ring is O-ring seal.
Optionally, second sealing ring is O-ring seal.
Optionally, it is connected between the nitrogen cylinder, the air gauge and the pressure reducing valve by hydraulic line, the decompression Valve is connected with the First Transition connector by hydraulic line.
Optionally, threaded hole, first gland are provided on first gland, second gland and the pillar Threaded hole and the pillar threaded hole cooperation, the threaded hole cooperation of the threaded hole of second gland and the pillar, institute The connection type for stating the first gland and the pillar is to be bolted, and the connection type of second gland and the pillar is spiral shell It tethers and connects.
Specifically, being bolted as a kind of dismountable connection type, selects be bolted here, it can be right in time First gland, the second gland and pillar are replaced and are safeguarded, it is ensured that the using effect of the osmosis device extends this The service life of osmosis device.
Optionally, the connection bolt of first gland and the pillar is 8, second gland and the pillar Connecting bolt is 8.
The present invention also provides a kind of real time scan devices for cooperating Medical CT comprising pressurization described in any of the above embodiments Permeability apparatus and three axis loading devices, the osmosis device and the three axis loading device are connected by hydraulic line.
Optionally, the three axis loading device includes three axis loading device ontologies, pressure head guide rod, the first pressure head, the second pressure Head, rubber film, first pressure head and second pressure head are all arranged with the rubber film, first pressure head and described Second pressure head is oppositely arranged on the inside of the three axis loading device ontology, the pressure head guide rod and the three axis loading device sheet Body connection, the pressure head guide rod are connected with second transit joint by hydraulic line.
Compared with prior art, the beneficial effect of the embodiment of the present invention includes, for example:
The osmosis apparatus structure is simple, and design is rationally, practical.Using aluminium as osmosis device noumenon Material, be able to satisfy Medical CT imaging when will not generate large effect.
The osmosis device can cooperate three axis loading devices be placed horizontally in Medical CT it is scanning bed on, according to requirement of experiment tune Whole pressure reducing valve carries out real-time CT dynamic scan test under the conditions of different osmotic pressure.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the schematic diagram of osmosis device provided in an embodiment of the present invention;
Fig. 2 is the cross-sectional view of osmosis device noumenon provided in an embodiment of the present invention;
Fig. 3 is the top view of osmosis device noumenon provided in an embodiment of the present invention;
Fig. 4 is the signal of three axis loading devices of the real time scan device of cooperation Medical CT provided in an embodiment of the present invention Figure.
Icon: 1- osmosis device;10- osmosis device noumenon;11- nitrogen cylinder;12- air gauge;13- decompression Valve;The first gland of 101-;The second gland of 102-;103- pillar;104- First Transition connector;The second transit joint of 105-;106- Piston;The first sealing ring of 107-;The second sealing ring of 108-;109- connection bolt;The space 1030- chamber;The first space 1031- chamber; 1032- second space chamber;Tri- axis loading device of 2-;Tri- axis loading device ontology of 20-;21- pressure head guide rod;The first pressure head of 22-; The second pressure head of 23-;24- rubber film.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " first ", " second " " third " etc. are only used for distinguishing and retouch It states, is not understood to indicate or imply relative importance.
The orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "inner", "outside" is based on shown in attached drawing Orientation or positional relationship or the invention product using when the orientation or positional relationship usually put, be merely for convenience of The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, the terms such as " vertical " are not offered as requiring absolute upright between component, but can be slightly tilted.As " hung down Directly " only refer to that its direction is in contrast more vertical, be not indicate the structure have to it is completely vertical, but can be slightly Inclination.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection " etc. shall be understood in a broad sense.For example, it may be being fixedly connected, may be a detachable connection, or It is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be by between intermediary It connects connected, can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition The concrete meaning of above-mentioned term in the present invention.
Fig. 1 is the schematic diagram of osmosis device 1 provided in an embodiment of the present invention, please refers to Fig. 1, nitrogen cylinder 11 and air pressure Table 12 is connected by hydraulic pipeline, and air gauge 12 is connected with pressure reducing valve 13 by hydraulic pipeline, pressure reducing valve 13 and osmosis dress It sets the First Transition connector 104 of ontology 10 to connect by hydraulic pipeline, the adjustable pressure reducing valve of user 13 is according to requirement of experiment Difference, apply different osmotic, when predetermined osmotic pressure to be achieved carries out real-time CT dynamic scan.
Fig. 2 is the cross-sectional view of osmosis device noumenon 10 provided in an embodiment of the present invention, referring to figure 2., osmosis Device noumenon 10 includes the first gland 101, the second gland 102, pillar 103, piston 106, First Transition connector 104 and the second mistake Cross connector 105.Pillar 103 is the intermediate pillar construction with space chamber 1030, and 103 one end of pillar and the first gland 101 connect, The other end and second gland 102 connection of the pillar 103 far from the first gland 101, piston 106 are set to 1030 inside of space chamber simultaneously Space chamber 1030 is divided for the first space chamber 1031 and second space chamber 1032, piston 106 can be moved to appointing for space chamber 1030 Meaning position.10 material of osmosis device noumenon is aluminium.
It is worth noting that not constituted pair using aluminium as the material of osmosis device noumenon 10 in the present embodiment The restriction of 10 material of osmosis device noumenon, in other embodiments can also using copper or other be easy to be worn by X-ray Saturating material can equally achieve the purpose that Medical CT scanning imagery is stable.
Referring once again to Fig. 2, osmosis device noumenon 10 further includes the first sealing ring 107 and the second sealing ring 108, and One sealing ring 107 is arranged for being sealed the first gland 101 and pillar 103, and the second sealing ring 108 is arranged for pair Second gland 102 and pillar 103 are sealed.
Before preparing experiment, permeating medium water is filled in second space chamber 1032, then again presses pillar 103 and second Lid 102 is connected and sealed, and then opens the valve of nitrogen cylinder 11, will be in the first space chamber 1031 by adjusting pressure reducing valve 13 Air emptying.
Fig. 3 is the top view of osmosis device noumenon 10 provided in an embodiment of the present invention, referring to figure 3., the first gland 101, it is provided with threaded hole on the second gland 102 and pillar 103, the threaded hole of the first gland 101 and the threaded hole of pillar 103 are matched It closes, the threaded hole cooperation of the threaded hole and pillar 103 of the second gland 102, the connection type of the first gland 101 and pillar 103 is It is bolted, the connection type of the second gland 102 and pillar 103 is to be bolted.The connection of first gland 101 and pillar 103 Bolt 109 is 8, and the connection bolt 109 of the second gland 102 and pillar 103 is 8.8 connection spiral shells on first gland 101 Bolt 109 is evenly distributed in the surface of the first gland 101, and 8 connection bolts 109 on the second gland 102 are evenly distributed in The surface of second gland 102.
It is bolted as a kind of dismountable connection type, can be convenient in the present embodiment to using being bolted The permeating medium water inside air and second space chamber 1032 inside one space chamber 1031 is regulated and controled.Meanwhile using bolt Connection is conducive to the first gland 101, the second gland 102 and pillar 103 and is replaced and safeguarded, it is ensured that the osmosis device 1 Using effect, extend the service life of the osmosis device 1.
It is worth noting that in other embodiments using other type of attachment or different number of spiral shell can also be used Bolt is mounted on the different location of gland, and the present embodiment is not defined gland and 103 connection type of pillar, also not to bolt Number and location are defined.
Fig. 4 is the signal of three axis loading devices 2 of the real time scan device of cooperation Medical CT provided in an embodiment of the present invention Figure, referring to figure 4., three axis loading devices 2 include three axis loading device ontologies 20, pressure head guide rod 21, the first pressure head 22, second pressure First 23, rubber film 24, the first pressure head 22 and the second pressure head 23 are all arranged with rubber film 24, the first pressure head 22 and the second pressure head 23 are oppositely arranged on the inside of three axis loading device ontologies 20, pressure head guide rod 21 and the three axis loading device ontology 20 connection, Pressure head guide rod 21 is connected with the second transit joint 105 by hydraulic line.Sample is placed on the first pressure head 22 and the second pressure head 23 Between.
Incorporated by reference to Fig. 1-Fig. 4, the specific test procedure of the present invention is as follows:
1) the pressure head guide rod 21 prepared, the first pressure head 22, rubber film 24, sample, the second pressure head 23 are attached, O-ring seal is embedded in the seal groove of the first pressure head 22 and the second pressure head 23 makes it fix and seal.
2) the pressure head guide rod 21 connected, the first pressure head 22, rubber film 24, sample, the second pressure head 23 are put into togerther In three axis loading devices 2.
3) piston 106 is put into 103 bosom position of pillar, is then sealed the first gland 101 and pillar 103 Connection.
4) nitrogen cylinder 11, air gauge 12, pressure reducing valve 13 and First Transition connector 104 are attached.
5) permeating medium water is filled in second space chamber 1032, and by 102 company of being sealed of pillar 103 and the second gland It connects.
6) valve for opening nitrogen cylinder 11, empties the air in the first space chamber 1031 by adjusting pressure reducing valve 13.
7) valve is closed after evacuation of air, is later attached the second transit joint 105 and pressure head guide rod 21.
8) by the three axis loading devices 2 connected together with pressure head guide rod 21, the first pressure head 22, rubber film 24, sample, Two pressure heads 23 be put into togerther Medical CT machine it is scanning bed on.
9) 11 valve of nitrogen cylinder is opened, by adjusting pressure reducing valve 13 according to the difference of requirement of experiment, applies osmotic pressure, wait reach Real-time CT dynamic scan is carried out when to predetermined osmotic pressure, and records related data.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of osmosis device, which is characterized in that including nitrogen cylinder, air gauge, pressure reducing valve and osmosis device noumenon,
The nitrogen cylinder is connected with the air gauge, and the air gauge is connected with the pressure reducing valve, the pressure reducing valve and it is described plus Press the connection of permeability apparatus ontology;
The osmosis device noumenon includes the first gland, the second gland, pillar, piston, First Transition connector and the second mistake Cross connector;
The pillar is the intermediate pillar construction with space chamber, and described pillar one end is connected with first gland, the branch The other end of the column far from first gland is connected with second gland, and the piston is set to the intracavitary portion in the space and will The space chamber is divided into the first space chamber and second space chamber, and the piston can be moved to any position of the space chamber;
The First Transition connector is connected with first gland, and second transit joint is connected with second gland;
The osmosis device noumenon material is aluminium.
2. osmosis device according to claim 1, which is characterized in that the osmosis device noumenon further includes One sealing ring, first sealing ring are arranged for being sealed first gland and the pillar.
3. osmosis device according to claim 1, which is characterized in that the osmosis device noumenon further includes Two sealing rings, second sealing ring are arranged for being sealed second gland and the pillar.
4. osmosis device according to claim 2, which is characterized in that first sealing ring is O-ring seal.
5. osmosis device according to claim 3, which is characterized in that second sealing ring is O-ring seal.
6. osmosis device according to claim 1, which is characterized in that the nitrogen cylinder, the air gauge and described It is connected between pressure reducing valve by hydraulic line, the pressure reducing valve is connected with the First Transition connector by hydraulic line.
7. osmosis device according to claim 1, which is characterized in that first gland, second gland and Threaded hole, the threaded hole cooperation of the threaded hole and the pillar of first gland, second pressure are provided on the pillar The connection type of the cooperation of the threaded hole of the threaded hole of lid and the pillar, first gland and the pillar is to be bolted, The connection type of second gland and the pillar is to be bolted.
8. osmosis device according to claim 7, which is characterized in that the connection of first gland and the pillar Bolt is 8, and the connection bolt of second gland and the pillar is 8.
9. a kind of real time scan device for cooperating Medical CT, which is characterized in that including the described in any item pressurizations of claim 1-8 Permeability apparatus and three axis loading devices, the osmosis device and the three axis loading device are connected by hydraulic line.
10. the real time scan device of cooperation Medical CT according to claim 9, which is characterized in that the three axis load dress It sets including three axis loading device ontologies, pressure head guide rod, the first pressure head, the second pressure head, rubber film, first pressure head and described Second pressure head is all arranged with the rubber film, and first pressure head and second pressure head are oppositely arranged on the three axis load The inside of device noumenon, the pressure head guide rod are connected with the three axis loading device ontology, the pressure head guide rod and described second Transit joint is connected by hydraulic pipeline.
CN201810975801.8A 2018-08-24 2018-08-24 Pressurization and permeation device and real-time scanning device matched with medical CT Active CN109060852B (en)

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CN202814845U (en) * 2012-08-03 2013-03-20 中国石油天然气股份有限公司 Three-phase Relative Permeability Test System Based on CT Scanning
CN104155178A (en) * 2014-07-17 2014-11-19 中国科学院寒区旱区环境与工程研究所 Rock and soil sample installation device for special triaxial loading device of medical computerized tomography (CT) machine
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CN104964880A (en) * 2015-05-20 2015-10-07 中国矿业大学(北京) Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box
CN206020226U (en) * 2016-08-11 2017-03-15 辽宁工程技术大学 A kind of Multifunctional permeameter
CN107084884A (en) * 2017-04-25 2017-08-22 中国科学院寒区旱区环境与工程研究所 High pressure low temperature frozen soil pressure loading device
CN108051307A (en) * 2017-12-13 2018-05-18 辽宁工程技术大学 Rock disturbance creep test test system and method under seepage water pressure effect

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799382A (en) * 1987-06-01 1989-01-24 Mobil Oil Corporation Method for determining reservoir characteristics of a porous material
CN2246796Y (en) * 1996-01-05 1997-02-05 吕鸣冈 Steel cylinder checker without axial pressure
US20100126266A1 (en) * 2007-04-26 2010-05-27 Joseph Guillaume Christoffel Coenen Formation core sample holder assembly and testing method
CN101387598A (en) * 2008-10-08 2009-03-18 中国科学院武汉岩土力学研究所 Rock porosity real-time test device under action of Chemosmosis and creep coupling
CN202814845U (en) * 2012-08-03 2013-03-20 中国石油天然气股份有限公司 Three-phase Relative Permeability Test System Based on CT Scanning
CN104155178A (en) * 2014-07-17 2014-11-19 中国科学院寒区旱区环境与工程研究所 Rock and soil sample installation device for special triaxial loading device of medical computerized tomography (CT) machine
CN104777089A (en) * 2015-04-29 2015-07-15 长沙理工大学 Road surface material permeability test system under multi-field coupling condition
CN204613070U (en) * 2015-04-29 2015-09-02 长沙理工大学 CT real-time scanning loading device of pavement material permeability test system
CN104964880A (en) * 2015-05-20 2015-10-07 中国矿业大学(北京) Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box
CN206020226U (en) * 2016-08-11 2017-03-15 辽宁工程技术大学 A kind of Multifunctional permeameter
CN107084884A (en) * 2017-04-25 2017-08-22 中国科学院寒区旱区环境与工程研究所 High pressure low temperature frozen soil pressure loading device
CN108051307A (en) * 2017-12-13 2018-05-18 辽宁工程技术大学 Rock disturbance creep test test system and method under seepage water pressure effect

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